ZBrushCentral

Preserving Low Density UVs

ZBrush Usage Questions
#1

Hi all,

New to ZBrush (and loving it!) and have run into a problem I can’t figure out. I’ve watched a dozen tutorials on it but this is not covered … or I’m totally missing it.

I sculpted a model. It got to be about 2m polys - that’s cool. I need to create UVs for it - I go to UVMaster and using poly paint and get some UVs that I can live with. Because of the cloning the UVs are of the low poly mesh. When I add the divisions back to the mesh to get my detail back and export the mesh [as obj] the resulting UVs are way too dense, due to the subdividing I guess, to be of any use. If I use GOZ (to Max) and send the low poly over the UVs are good - but when I send the high poly I got too dense UVs again.

Question - I need the low density UVs and the high poly mesh - is this even possible? I can’t paint the textures (in PS) with the UVs so dense they just look like a solid color.

Any suggestions or nudges in the right direction would be greatly appreciated! :slight_smile:

Thanks!

#2

In most workflows, the sculpt itself wont need to have the UVs applied to it. You can just polypaint directly onto the sculpt, and then bake the results down to the lowpoly’s UVs (or skip the polypainting stage, bake out your normal/ao/etc maps, and then texture the low poly’s diffuse in photoshop). The two can be different meshes with different topology.

If you absolutely need the sculpt itself painted and prefer to use photoshop instead of polypaint for painting it, it might be better to export a low/mid-range subdivision level so that the wireframe guide isn’t as dense.

#3

Hi - thank you for the reply!

it might be better to export a low/mid-range subdivision level so that the wireframe guide isn’t as dense.

Would you be so kind as to elaborate a bit more on this method - do you mean in addition to the high mesh and somehow you can use the low density wireframe with either/both of the meshes? I’m confused but intrigued! :o:D

#4

He is saying that your UVs for your lowres and your highres are the same UVs. Just one is more dense. If you paint on your lowres UVs and apply that to your any resolution of your object they should sit the same on the surface.

#5

Ah - thanks! I was wondering if that was possible, just wasn’t sure how to go about it.

thanks again!